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Patent applications and USPTO patent grants for Nagamatsu; Sayaka.The latest application filed is for "high-strength spring steel".
Patent | Date |
---|---|
Gear having excellent seizing resistance Grant 9,587,288 - Nagamatsu , et al. March 7, 2 | 2017-03-07 |
High-strength Spring Steel App 20170022580 - NAGAMATSU; Sayaka ;   et al. | 2017-01-26 |
Gear Having Excellent Seizing Resistance App 20150038380 - Nagamatsu; Sayaka ;   et al. | 2015-02-05 |
Steel wire material for spring and its producing method Grant 8,382,918 - Yoshihara , et al. February 26, 2 | 2013-02-26 |
High-strength Spring Steel App 20120285585 - Nagamatsu; Sayaka ;   et al. | 2012-11-15 |
Steel Wire Material For Spring And Its Producing Method App 20110303327 - YOSHIHARA; Nao ;   et al. | 2011-12-15 |
Steel Wire Material For Spring And Its Producing Method App 20090020189 - YOSHIHARA; Nao ;   et al. | 2009-01-22 |
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